ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract. The production process of the charged Higgs boson associated with a W boson at electron–positron colliders is discussed in the two-Higgs-doublet model (2HDM) and in the minimal supersymmetric standard model (MSSM). The process is induced at one-loop level in these models. We examine how much the cross section can be enhanced by quark- and Higgs-loop effects. In the non-SUSY 2HDM, in addition to large top–bottom (t–b) loop effects for small $\tan \beta (\ll (m_t/m_b)^{1/2})$ , the Higgs-loop diagrams can contribute to the cross section to some extent for moderate $\tan \beta$ values. For larger $\tan \beta$ ( $\gg (m_t/m_b)^{1/2}$ ), such an enhancement by the Higgs non-decoupling effects is bounded by the requirement of the validity of perturbation theory. In the MSSM with heavy superpartner particles, only the t–b loops enhance the cross section while Higgs-loop effects are very small.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100520000480
